FVXX20 KWBC 191057
VOLCANIC ASH ADVISORY 
ISSUED: 2003APR19/1100Z VAAC: WASHINGTON

VOLCANO: CHIKURACHKI   0900-36
LOCATION: N5019E15527    AREA: KURILES

SUMMIT ELEVATION: 5958 FT (1816M)

ADVISORY NUMBER: 2003/002
 
INFORMATION SOURCE: ALASKA VOLCANO OBSERVATORY. ANCHORAGE VAAC.
NOAA-16 IMAGERY. GEOSTATIONARY MULTISPECTRAL IMAGERY.  GFS MODEL
WINDS FORECAST. 

ERUPTION DETAILS: SEVERAL ASH EMISSIONS WITH THE MOST RECENT AT
ABOUT 19/0200Z
 
OBS ASH DATE/TIME: 19/0932Z
 
OBS ASH CLOUD: ASH NOT IDENTIFIABLE FROM SATELLITE DATA.  WINDS
SFC/FL140 MOVING E 25-50 KNOTS.  FL160/FL320 MOVING E 70-125
KNOTS.

FCST ASH CLOUD +6H: SEE SIGMETS AND VAFTAD
 
REMARKS: AT ABOUT 0532Z THE TWO AREAS OF ASH DESCRIBED IN THE
PREVIOUS WASHINGTON VAAC VAA BECAME TOO THIN TO SEE IN IMAGERY.
AT ABOUT 0832Z ASH FROM THE MOST RECENT EMISSION BECAME TOO THIN
TO SEE IN MULTISPECTRAL GMS IMAGERY.  AT 0832Z THE LEADING EDGE
OF THIS ASH WAS AT ABOUT N4642E16922 WHICH IS AT THE BORDER OF
THE ANCHORAGE AND WASHINGTON VAACS.  PRESUMABLY BY 11Z THIS THIN
ASH HAS ENTERED THE WASHINGTON VAAC AIRSPACE AND HAS REACHED VERY 
APPROXIMATELY TO THE POINT N4600E17200.  THIS WILL BE THE FINAL
ADVISORY FROM THE WASHINGTON VAAC UNLESS NEW ASH EMISSIONS ARE
DETECTED. 

NEXT ADVISORY: NO FURTHER ADVISORIES



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